Lack of Assistance

My car was towed to Audi Airport on the 03/03/2016 and it was diagnosed that the fuel system had failed. The repairs were done on the vehicle and i collected the car on the 04/03/2016. I filled my tank a week later and noticed that the car was leaking fuel.I took the car back to the dealership. A week later i filled a tank noticed the car was still leaking which got me frustrated now because i thought the issue was resolved. I am now told that they have to strip the tank and that could result in extra charge on my side. what puzzles me is the fact that when the car was brought to the dealership it wasn't leaking fuel but after they worked on the fuel system now this issue arises and i have to foot the bill for the repairs that were not done properly from the first place.<br> I escalated the issue to Audi SA(22.03.2016) and they promised to get back to me after 24 hours which they did not i had to call them for feedback and left messages but no one has been in contact with me as yet. The dealer advised me that they dont have loaner cars for this weekend and if i want i can come get my car and bring it on Tuesday, Clearly they have no regard of my safety to even suggest such. APPALLED!!